Assertion (A): Graphite is a good conductor of electricity, however, diamond belongs to the category of insulators. Reason (R): Graphite is soft in nature on the other hand diamond is very hard and brittle

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Solution

Diamond is bad conductor of electricity because all valence e of carbon are involved in bonding. In graphite however 3 out of 4 valence electrons are involved in bonding, fourth electron remains free between adjacent layers which makes it a good conductor. Graphite is soft because parallel layers are held together by week van der Waals force. However, diamond is hard due to compact three-dimensional network of bonding.

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Similar questions

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices.

(a) Assertion and Reason both are correct statements an Reason is correct explanation for Assertion.

(b) Assertion and Reason both are correct satements but Reason is not correct explanation for Assertion.

(d) Assertion is wrong statement but Reason is correct statement.

Assertion (A) Graphite is a good conductor of electricity however diamond belongs to the category of insulators.

Reason (R) Graphite is soft in nature on the other hand diamond is very hard and brittle.

Q. Assertion :Among the carbon allotropes, diamond is an insulator, whereas, graphite is a good conductor of electricity. Reason: Hybridization of carbon in diamond and graphite is

{s p}^{3}

and

{s p}^{2}

, respectively.

Read the above assertion and reason and choose the correct option regarding it.

Q. Assertion :Graphite is soft while diamond is hard. Reason: Graphite has three dimensional structure while diamond has planner.

Q. Assertion :Graphite is soft while diamond is hard. Reason: Graphite has three dimensional structure while diamond has planar structure.

Q. Why diamond is a hard and the graphite is very soft.

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